Effect of magnetic field, size and donor position on the absorption coefficients related a donor within the core/shell/shell quantum dot

Magnetic field effect on the linear and nonlinear refractive index and optical absorption of a donor in a GaAs quantum ring

“…The optical properties related to the transitions of the charge carriers in nanostructures have great potential for instrument applications in photodetectors, laser amplifiers and optical communications [9]. Consequently, in recent years, the optical properties of low dimensional systems such as the linear, nonlinear and total refractive indexes (RIs), optical absorption coefficients (OACs) [4,7,[16][17][18][19][20][21][22][23][24][25] and oscillator strength [26][27][28][29] have attracted great attention in the theoretical studies. In a recent work [16], it has been exposed that the peak location of the optical absorption coefficients blueshifts and their amplitude decreases under the presence of a magnetic field for the impurity confined in a core/shell QD.…”

“…Consequently, in recent years, the optical properties of low dimensional systems such as the linear, nonlinear and total refractive indexes (RIs), optical absorption coefficients (OACs) [4,7,[16][17][18][19][20][21][22][23][24][25] and oscillator strength [26][27][28][29] have attracted great attention in the theoretical studies. In a recent work [16], it has been exposed that the peak location of the optical absorption coefficients blueshifts and their amplitude decreases under the presence of a magnetic field for the impurity confined in a core/shell QD. The authors of [17] have investigated the optical absorption of an impurity confined in a GaAs cylindrical QR.…”

Effects of hydrostatic pressure and temperature on refractive index changes in tuned quantum dots under magnetic field

“…With the in-depth study of submicron and deep submicron, low dimensional semiconductor quantum devices have emerged [4][5][6][7]. The development of low dimensional semiconductor materials actually promotes the rapid development of quantum research [8][9][10]. When approaching or reaching the nano size, the low dimensional semiconductor structure will show some new quantum phenomena and effects.…”

Binding energies, oscillator strengths of core/shell spherical quantum dots with or without on- or off-center donor impurities under an external magnetic field

“…Over the years, the study of the electronic and optical properties of atomic, molecular or nanoscale systems, especially under the influence of external perturbations has become very relevant for the researchers. Effects of external environments such as a magnetic field [11][12][13][14][15][16][17][18][19][20][21][22], an electric field [23][24][25][26], both electric and magnetic fields [27,28] and hydrostatic pressure [29] on the electronic and optical properties of the nanostructure systems with impurities located on or out from the center constitute a subject of considerable interest of theoretical and experimental studies. Recently, many investigations both theoretical and experimental have been carried out on the energy levels and binding energies of hydrogenic impurities in the presence of a magnetic field using diverse calculation methods such as perturbation, variational and finite-difference methods [30][31][32].…”